Zilog EZ80190 - Manual (Page 29)

eZ80190 Development Kit
User Manual
UM014108-0810 Operational Description
25
The GPIO Data Register receives inputs or provides outputs for each of
the seven general-purpose port lines, depending on the configuration of
the port. See Table 8.
Reading from the general-purpose port can damage the drivers
used for the general-purpose port and memory. The port can,
however, be used for writing data.
Anode Col 5 X
Anode Col 6 X
Anode Col 6 X
GPIO Output X
Table 8. General-Purpose Port Data Register
Function
Bit #
7 6 5 4 3 2 1 0
GPIO D0 X
GPIO D1 X
GPIO D2 X
GPIO D3 X
GPIO D4 X
GPIO D5 X
GPIO D6 X
GPIO D7 X
Table 7. LED Anode/General-Purpose Port Output Control Register (Continued)
Function
Bit #
7 6 5 4 3 2 1 0
Caution: